It's important to note that a small, painless scab in the corner of your bottom lip may not necessarily be indicative of herpes (HSV). Herpes lesions typically cause symptoms such as tingling, itching, burning sensation before developing into painful blisters or sores.

In your case, if the tiny scab appeared without any associated discomfort or itchiness and you only noticed it upon closer examination, it might have a different underlying cause like minor trauma from biting your lip accidentally.

However, for peace of mind and proper evaluation concerning any skin changes on your lips or elsewhere on your body related to possible STDs like herpes (HSV), I recommend consulting with a healthcare provider for an accurate diagnosis. They can provide expert insight based on physical assessment and potentially testing if needed. Remember always seeking professional medical advice is essential when dealing with potential health concerns.